GF83.70-P-3058B Activate Preprogrammed Heater, Function

GF83.70-P-3058B Activate Preprogrammed Heater, Function
- with CODE (228) Stationary heater [models 203 up to 23.4.04, 209.3 up to 31.5.04, 215 as of 1.6.00 up to 31.8.02, 220 as of 1.6.00 up to 31.8.02, 230.4 up to 08]

Component Identification:

Function requirements:
^ Circuit 15 OFF
^ Stationary heater switched off

Function sequence
1. A preselection time is activated on the instrument cluster (A1), it is then displayed by the yellow indicator lamp in the STH switch (N72s12 or S46).

2. The preselection time has expired, the yellow indicator lamp is off and the instrument cluster (A1) sends the "stationary heater On" signal over CAN-B (CAN-B) to the STH control unit or the STH or HB [ZUH] control unit (A6n1).

3. The STH control unit or the STH or HB [ZUH] control unit (A6n1) recognizes the cut-in signal, activates the stationary heater menu in the instrument cluster (A1) over CAN-B (CAN-B) and simultaneously starts the heat or ventilate inquiry in the control and operating unit (N18, N22 or N22/7).

4. The control and operating unit (N18, N22 or N22/7) compares the current interior temperature with the preset temperature value.

5.1 If the interior temperature is less than the preselected temperature value, the control and operating unit (N18, N22 or N22/7) sends the "heat" signal over CAN-B (CAN-B) to the STH control unit or the STH or HB [ZUH] control unit (A6n1) and switches to the stationary heater mode.
The STH control unit or the STH or HB [ZUH] control unit (A6n1) activates the STH heater unit or the STH or HB [ZUH] heater unit (A6), which is indicated by the indicator lamp in the STH switch (N72s12 or S46) lighting up.

5.2 If the interior temperature is greater than the preselected temperature value, the control and operating unit (N18, N22 or N22/7) sends the "ventilate" signal over CAN-B (CAN-B) to the STH control unit or the STH or HB [ZUH] control unit (A6n1) and switches to the stationary ventilation mode.
The STH control unit or the STH or HB [ZUH] control unit (A6n1) actuates the stationary ventilation and sends the "blower On" signal to the control and operating unit (N18, N22 or N22/7). The indicator lamps in the STH switch (N72s12 or S46) display the actuation of the stationary ventilation by flashing on and off.

Ignition (terminal 15) ON at expiration of preselect time
^ Following expiry of the preselected time, the instrument cluster (A1) cut-in request is suppressed, heater operation or stationary ventilation is not actuated.

Heater operation or stationary ventilation upon expiration of preselect time
^ Following expiry of the preselected time, the instrument cluster (A1) cut-in request is suppressed if heater operation or stationary ventilation is manually actuated.